What is unfair? unfair is injustoWhat is injusto? Not just or evenhanded; biased: an unfair call by an umpire. No justo o imparcial; parcial: una llamada injusta por un árbitro. Contrary to laws or conventions, especially in commerce; unethical: unfair trading. Contrario a las leyes o convenciones, especialmente en el comercio; ética: comercio desleal.